Method and apparatus for showing an expression of how an object has been stared at in a displayed video

Abstract

Architecture and designs of wearable display devices for are described. According to one aspect of the present invention, a wearable display device is equipped with an external display device facing outwards. In other words, the external display device is not meant for the wearer of the wearable display device but used for the wearer to engage with a person before or in the vicinity of the wearer. The external display device may be turned on manually or automatically to display an expression. Depending on implementation or application, the expression may be a text, a symbol or an emoji with or without reference to the content being displayed in the wearable display devices.

We claim: 
     
         1 . A wearable display device for reporting tracking of a predefined object in a video, the wearable display device comprising:
 at least an integrated lens being held in a frame;   an external display facing outwards so that a person sits or stands in front of the wearer sees what is being displayed on the external display;   a pair of temples, at least one temple coupled to a cable, wherein the cable is extended beyond the temple to receive the video from a wearable case;   a projection mechanism, disposed near an end of the temple, receiving the video and projecting the video into the integrated lens, wherein the wearer sees the video in the integrated lens; and   at least a sensor, mounted near or on the frame, provided to focus onto a pupil starring at the predefined object moving in the video, wherein the external display displays an expression to show how the wearer has been following the predefined object moving in the video.   
     
     
         2 . The wearable display device as recited in  claim 1 , wherein the expression is a score indicating how long the wearer has been following the predefined object moving in the video. 
     
     
         3 . The wearable display device as recited in  claim 2 , wherein the sensor generates a set of images while focusing onto the pupil, the set of images is used to derive a trajectory of the predefined object moving in the video. 
     
     
         4 . The wearable display device as recited in  claim 3 , wherein a time of the wearer having been following the predefined object moving in the video is estimated from the trajectory. 
     
     
         5 . The wearable display device as recited in  claim 4 , wherein the score is related to the time. 
     
     
         6 . A method for a wearable display device to report tracking of a predefined object in a video, the method comprising:
 receiving the video via a cable in the wearable display device, wherein the wearable display device includes:
 at least an integrated lens being held in a frame; 
 an external display facing outwards so that a person sits or stands in front of the wearer sees what is being displayed on the external display; 
 a pair of temples, at least one temple coupled to a cable, wherein the cable is extended beyond the temple to receive the video from a wearable case; 
 a projection mechanism, disposed near an end of the temple, receiving the video and projecting the video into the integrated lens, wherein the wearer sees the video in the integrated lens; and 
 generating a set of images from a sensor, mounted near or on the frame, provided to focus onto a pupil starring at the predefined object moving in the video; 
 displaying on the external display an expression to show how the wearer has been following the predefined object moving in the video. 
   
     
     
         7 . The method as recited in  claim 6 , wherein the expression is a score indicating how long the wearer has been following the predefined object moving in the video. 
     
     
         8 . The method as recited in  claim 7 , wherein the sensor generates a set of images while focusing onto the pupil, the set of images is used to derive a trajectory of the predefined object moving in the video. 
     
     
         9 . The method as recited in  claim 8 , wherein a time of the wearer having been following the predefined object moving in the video is estimated from the trajectory. 
     
     
         10 . The method as recited in  claim 9 , wherein the score is related to the time.